CORESTA Meeting, Agronomy/Phytopathology, Cesme, 1989, A 08
Effect of ammonium and nitrate nitrogen on yield and quality of Virginia tobacco
Istituto di Agronomia Generale, Perugia, Italy.
Field experiments were carried out in central Italy in 1986 and 1987 to evaluate the effects of ammonium and nitrate nitrogen on yield and quality of Virginia tobacco. 50 kg N/ha were supplied in different proportions of ammonium and nitrate...